package Stack;

import java.util.*;

public class IsPopOrder {
    public boolean IsPopOrder(int [] pushA,int [] popA) {
        Stack<Integer> stack = new Stack<>();
        int j = 0;
        for(int i = 0 ; i < pushA.length ; i++){
            stack.push(pushA[i]);
            while(j < popA.length && !stack.empty() && stack.peek() == popA[j]){
                stack.pop();
                j++;
            }
        }
        return stack.empty();
    }
}